Caballero was born in
Barquisimeto, studied history at the
Central University of Venezuela and obtained a PhD at
University College London. With the publication of his PhD dissertation he became the first Venezuelan author to be published by
Cambridge University Press. In 1989 he was invited to teach at
Universitá degli Studi di Napoli in Italy. He received the National Award on Journalism (Premio Nacional de Periodismo) and the National History Award (Premio Nacional de Historia, 1994) and in 2005 he was elected as a member of the
Academia Nacional de la Historia (or National Academy of History of Venezuela). He wrote regularly for Venezuelan newspapers
El Nacional, El Diario de Caracas and most recently
El Universal. Despite his past as a left-wing thinker and political activist, in particular against president
Rómulo Betancourt, in his latter years he became one of the most vocal and vehement critics of president
Hugo Chávez and his administration. He revised his perspective on President Betancourt in a biography written in 2004. On 2010, he underwent a prostate surgery that triggered a series of infections unresponsive to antibiotics, further complicated by diabetes. He died on 12 December 2010. ==Works==